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34kurt
2 years ago
5

A hot iron ball is dropped into 200.0 g of cool water. The water temperature increases by 2.0 C and the temperature of the ball

decreases by 18.6 C. What is the mass of the ball? waters specific heat is 4184 (J/kg•C)
Physics
1 answer:
Bess [88]2 years ago
7 0
0.2 KG, just search the question and it's on yahoo answers 
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(6.9 * 10-6)(770 * 102)
meriva

Answer:

4948020

Explanation:

(6.9*10-6)(770*102)

<u>Multiply  6.9  by  10 . </u>

( 69 − 6 ) ( 770 ⋅ 102 )

<u>Subtract  6  from  69 . </u>

63 ( 770 ⋅ 102 )

<u>Multiply  770  by 102 . </u>

63 ⋅ 78540

<u>Multiply  63  by  78540 . </u>

4948020

5 0
3 years ago
Why Universe is Created?
salantis [7]
The entire premises of this question infers to the concept of Creation. So the reason why the universe was created, in that sense, was so god could create a land to support the civilization he wanted.
6 0
3 years ago
a rifle is aimed directly at the bulls eye of a target 75 meters away. if the bullet has a speed of 250 m/s, how far below the b
jasenka [17]

Answer:

Explanation:

Given

Distance of target d=75 m

velocity of bullet v=250 m/s

First taking horizontal motion

as there is no acceleration is horizontal direction therefore a_x=0

d=ut+\frac{1}{2}a_xt^2

where u=initial velocity

a_x=acceleration

t=time

75=250\times t

t=0.3 s

In this time Vertical distance moved by Bullet is

y=u_yt+\frac{1}{2}a_yt^2

here u_y=0

a_y=g=9.8 m/s^2

y=\frac{1}{2}\cdot 9.8\cdot (0.3)^2

y=0.441 m

     

3 0
3 years ago
It takes Serina 0.25 hours to drive to school. Her route is 16 km long. What is Serina’s average speed on her drive to school?
tankabanditka [31]

Answer:

17.78 m/s

Explanation:

Average speed is found by simply dividing the distance travelled by the time that it took to finish the trip. It's measured in meters per second (m/s), so first convert the quantities.

1 km = 1000 m, so 16 km is 16000 m

0.25 hours is 15 minutes. Since 1 minute is 60 seconds, then 15 minutes must be 900 seconds.

Thus:

average speed = total distance/total time = 16000 m / 900 s = 17.78 m/s

Hope this helps!

Brainliest please!

5 0
2 years ago
What happens to the speed of sound in a medium when the bulk modulus of the medium increases
loris [4]

When the bulk modulus of the medium increases, the speed of sound increases

The bulk modulus, which is often referred to as incompressibility, is a gauge of a substance's resistance to volume changes when compressed from all sides. It is determined by dividing the ratio of the applied pressure by the relative deformation.

Sound waves are mechanical waves, which means they are oscillations of matter. Hence they require a medium or system of particles (solid, liquid, or gas) to travel through. If the particles of the medium are near to each other, the transmission of energy is easy and hence, the wave travels faster.

Learn more about bulk modulus here

brainly.com/question/14070556

#SPJ4

6 0
1 year ago
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